Feed-water heater and purifier.



Patented Sept. 2.1902.

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J. E. -CBAWLEY.

FEED wATEn HEATER Ann PumFlEn (Application led May 12, 1 902.)

(lo Model.)

No. 708,028. u v .Patented Sept. 2, |902.

FEED WATER HEATER AND PURIFIEB.

. (Application filed Hay 1.5.l 1902A mu Model.)

2 Sheets-Sheet 2.

TH: Nonms PETERS co, PNomLirHo.. wnsumcmm. n. c4

view of a portion of the heater indicated by, line 4 4 in said first figure; and Fig. 5, a frag-4 UNITED STATES PATENT OFFICE.

JAMES E. CRAWLEY, OF MILWAUKEE, WISCONSIN.

FLEED-*WATER HEATER AND PURIFIER.

SPECIFICATION forming' par?. of Letters Patent N0. 708,028, dated September 2, 1902.

Application tiled May 12, 1902.-

To a/ZZ whom imag concern: l Y

Be it known that I, JAMES ECRAWLEY, a citizenof the United States, and a resident of Milwaukee, in the county of Milwaukee and State of Wisconsin,haveinvented certain new and useful Improvements in Feed --Water Heaters and Purifiers and I do hereby declare thatthe'following is a full, clear, and exact descriptionA thereof.

The improvements consist in certain peculiarities of ,construction and combination ofparts,hereinafterparticularly set forth with reference to the accompanying drawings and subsequently claimed, the object of the in vention beingto provide simple, economical, and efficient apparatusfor heating and purifying feed-water for steam-boilers.

vFigure l of the drawings represents a vertical section of a feed-water heaterand purifier embodying my improvements; Figs. 2 and 3, horizontal sectional views of the same,

respectively indicated by lines 2 2 and 3 tin the first figure; Fig. 4, a vertical sectional mentary view, in vertical section, indicated by line 5 5 in the secondlfigure.

Referring by letter to the drawings, AA indicates a vertical cylinder of any suitable dimensions having a steam -inlet pipe B coupled to its Wall below the middle distance of its length, and a steam-outlet pipe C is coupled to the upperhead of the cylinder, preferably central of the same. A water-inlet pipe D is also coupled to the upper cylinder-head, and riveted or otherwise suitably secured to the cylinder-wall and a brace E, depending from said cylinder-head, are a series of shallow'pans F, of gradually-increasing width indescending order, thesepans being alternately provided with upwardlyanged bottom outlets. Water overiiows the rim of each solid bottom pan into a pan having a bottom outlet and then overilows the fiange of said outlet, the Water in all the pansl a verticaldirection, extend alternately in op- -filter being adjacent to the bottom or lower lvertical direction, and vertical rods P, en-

Athe screw-threaded ends of the bolts.

Serial No. 10618787. (No model.)

into the area bounded by said baiile-plate,

from whence it escapes through outlet-pipe C in connection with the upper head of said cylinder. Deflectors I J, made fast to the cylinder-wall andthe shell H at intervals in 6o posite directionswithin'the steam-space between said wall and shell. By means of the deflectors a separation of oil fromthe steamV is eected, and the products of condensation on said deflectors escape through a pipe K, coupled to the cylinder adjacent to the bottom of the shell therein.` The water exposed in the pans F to the current of purified steam is heated to a high temperature sufficient to causeseparation and precipitation of material ordinarilyheld in solution therewith, andv the heated water finds its way through a filter arranged within the confines of shell H to eX- tend below the same, the lower end of said end of the cylinder.

The iilter herein shown consists of a skeleton lframe comprising a pair of oppositevertical channel-plates L, one of which is rivet- .der-wall and the other to shell H;'end caps M, similarly secured to the plates; horizontal .bars N, made fast at their ends to the inturned edges of said plates at intervals in a lgaging apertures at intervals lengthwise of the bars; a web of pliable strainer material Q, preferably burlap, wound several times on ,the frame lengthwise thereof; straps R, facing the strainer material parallel to the channelplates of said frame; bolts S, extending through the straps, and clamp-nuts T, run on Coupled to the cylinder, in communication with the interior offthe filter through one of its channel-plates,`is a pipe U, that conveys the filtered water to a boiler-feed pump or injector, and a valve-controlled 'equalizing-pipe V connects the formerv pipe with the cylinder above the lower end of the baffie-plate above specified. A valve-controlled clean-out pipe W is coupledto pipe U, and a valve-controlled drain-pipe X is coupled to cylinder A below the filter, said cylinder being also provided with an overfiow Y between the lower one of the pans F and the upper end of the filter. The equalizing-pipe is normally open and the clean-out pipe normally closed; but when the filter becomes foul said equalizingpipe is closed and the clean-out and drain pipes W X are opened, water under pressure, followed by steam, being let into said filter through the pipes U, to which said clean-out pipe is coupled. The washing and steaming operations will eftectually clean the filter of the material separated from the feed-water, this material being run off through the drainpipe of the cylinder. A manhole having a closure Z is provided in the cylinder below shell II, and whenever necessary the old strainer material maybe removed from the filter-frame and new strainer material substituted. A pipe Z, herein shown in connection with the pipe U, leads to the usual chamber, (not shown,) in which a fioat is utilized to control a Valve (not shown) in connection with the water-inlet pipe D, above specified.

Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is-

l. A feed-water heaterand purifier having an inner filter comprising a skeleton frame consisting of a pair of opposite vertical endcapped channel-plates, horizontal bars connected at their ends to edges of the channelplates, vertical rods in connection with each series of bars at intervals lengthwise of same; pliable strainer material wrapped on the frame from end to end thereof, and means for clamping the strainer material against said channel-plates of said frame.

2. A feed-water heater and purifier having an inner filter comprising a skeleton frame consisting of a pair of vertical end-capped channel-plates, horizontal bars connected at their ends to edges of the channel-plates, vertical rods in connection with each series of bars at intervals lengthwise of same; pliable strainer material wrapped on the frame from end to end thereof, straps in pairs facing the strainer material parallel to said channelplates of said frame, bolts extending through each pairof straps above and below the strainer material, and clamp-nuts run on the bolts.

3. A feed-water heater and purifier comprising an outer vertical cylinder having a lower steam-inlet and upper steam-outlet, a

shell in connection with the cylinder inside the same forming therewith a steam-space open at the upper end, detlectors fast to said cylinder and shell at intervals within the adjacent steam-space, a drain-pipe for said steam-space, a baffle-plate depending from the upper cylinder-head parallel to the shell within the confines of same, means for collecting and temporarily holding Water in suspension within the confines of the bafile-plate, a filter below said baffle-plate, and a feedpump pipe in connection with the filter.

4. A feed-water heater and purifier cornprising an outer vertical cylinder having a lower steaminlet and upper steam-outlet, a shell in connection with the cylinder inside the same forming therewith a steam-space having deflectors arranged at intervals therein, a drain-pipe for said steam-space, a battleplate depending from the upper cylinderhead parallel to the shell within the confines of same, means for collecting and temporarily holding water in suspension within the confines of the baffle-plate, a filter below said baffle-plate, a feed-pump pipe in connection with the filter, and an equalizing-pipe connecting the feed-pump pipe with the cylinder above the lower end of said baffleplate.

5. A feed-water heater and purifier comprising an outer vertical cylinder having a lower steam-inlet and upper steam-outlet, a shell in connection with the cylinder inside the same forming therewith a steam-space having delectors arranged at intervals therein, a drain-pipe for saidsteam-space, a baffleplate depending from the upper cylinderhead parallel to the shell Within the contines of same, pans of gradually-increasing width in descending order supported within the confines of the baffle-plate under a Water-inlet, these pans being alternately provided with bottom outlets having upwardly-extending fianges, a filter below said baffle-plate, and a feed-pump pipein connection with the filter.

In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in

`the county of Milwaukee and State of Wiscousin, in the presence of two witnesses.

JAMES E. CRAWLEY.

Witnesses:

N. E. OLIPHANT, B. C. RoLoFF. 

